South Main St over Interstate 5
Tehama County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- South Main St over Interstate 5 in Tehama County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1964, making it 61 years old at the 2025 inventory.
- It carries about 13,950 vehicles a day (traffic count year 2015).
- Its listed owner is the state highway agency.
- It is one of 259 of the 447 inventoried bridges in Tehama County rated fair (57.9%); 21 (4.7%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.15781, -122.22372)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete multiple box beam |
| Length | about 321 ft |
| Location | 02-teh-005-r24.87-rbl |
| NBI structure number | 08 0112 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Tehama County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 5 over Biggs Creek | 1940 | 36,500 | Good |
| Interstate 5 over Taylors Wash | 1946 | 36,000 | Fair |
| Interstate 5 over Thomes Creek | 2011 | 29,500 | Fair |
| Interstate 5 over Kopta Creek | 1965 | 29,000 | Fair |
| Interstate 5 over Las Flores Creek | 1965 | 28,000 | Good |
| Interstate 5 over Branch Coyote Creek | 1965 | 28,000 | Good |
All bridges nearby: Tehama County, CA bridge conditions · every bridge in Tehama County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.